How Automatic Mode Works - Honeywell CN80 Series User Manual

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Use the Settings app to configure the Heater feature. To learn how, see
Parameters

How Automatic Mode Works

Automatic heater management saves power since the heaters are automatically
controlled by the system based on cold storage entry/exit detection.
Cold Storage Entry Detection
In Automatic mode, cold storage entry detection occurs when the computer
sensors identify a drop in ambient temperature below the defined Heater enable
temperature. The system starts the Chill timer in response to cold storage entry
detection.
Note: If you remove the computer from cold storage before the Chill timer expires, the timer
stops and the system does not turn On the heaters, saving battery power.
A snowflake
Cold Storage Exit Detection
In Automatic mode, cold storage exit detection occurs when the sensors identify a
quick rise in the ambient temperature.
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Note: When the heaters turn On, the icon changes from a snowflake
CN80 Mobile Computer Series User Guide
In Automatic mode with Preemptive Heating enabled, the cold storage battery
life ranges from a maximum of 6 hours to a minimum of 1.5 hours, depending
on the heater Preemptive delay time set. The window defrost times range from
zero to a maximum of one minute with factory default settings.
Manual mode
This mode is disabled by default. When enabled, heater activation is controlled
solely by the user. No temperature monitoring and timers are used to control
the heaters. The user must manually turn the heaters On or Off.
on page 26.
icon appears in the status bar when the Chill timer expires.
If Preemptive Heating is disabled (default) and the Chill time has expired, the
system turns the heaters On at full power when a cold storage exit is detected.
If Preemptive Heating is enabled and the Chill time has expired, the system
starts the Preemptive delay time. When the Preemptive delay time expires, the
heaters enter a low-power pre-heat stage. Pre-heating keeps the windows warm
to minimize condensation and frost when the computer is removed from cold
storage, allowing for quicker defrost times. The system turns the heaters On full
power when a cold storage exit is detected.
Heater
to a heater .
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